Arc-lamp.



E. J. GUAY.

ARC' LAMP.

APPLICAI'ION FILED 0CT.25. 1912. 1,142,251. Patented June 8, 1915.

Inventor: Emile JGUaB,

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i W l i u, d .M v 141| [il J V 4- v 1li 7J Ov IIIIIIIIIIIIQ 7 a u Z 8/ MA- su Witnesses: l Qdi/Z4 UNITED STATES PATENT OFFICE.

EMILE J. GUAY, OF SWAMPSCOTT, MASSACHUSETTS. ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ARC-LAMP.

Application filed October 25. 1912.

Be it known that I, Emmi J. GUAY, a citizen ot the United States, residing at Swainpscott, in the county oi Essex, State of Massachusetts. have invented certain new and useful Improvements in Arc-Lamps,of which the following is a specification.

My invention has reference to an arc lamp, and more particularly to an inclosed arc lanip of the 'lianiing or luminous type.

In accordance with my invention a novel are inclosure is provided, which is simple and etlicient, comprising passages leading from and to the globe through which the products of combustion pass and where they may deposit before they comeincontact with the inclosin g globe.

For a fuller understanding of my invention, reference is had to the accompanying drawings, in which- Figure 1 is a vertical scctionot an are lamp embodying my invention; Fig. 2 is a side elevation at right anglesto. Fig. 1, showing parts of the lamp. in. vsection and other parts broken away and still other portions of the lainp omitted altogether in order to more clearly illustrate my invention; and Fig. 3 is a sectional plan View on the line 3-3, Fig. 1.

In the drawings, referring first partielllarly to Fig. 1, 1 is the canopy of the lamp provided with 'upstanding lugs 2, from which the lamp is supported by a usual form of insulated pulley 3. The canopy is provided with a downwardly extending peripheral flange 4, within which a suitable casing for the laiup may be received. A short cylindrical plate 5 is provided with an outwardly extending flange 6 at itstp, by which the plate is secured to @4e/under side of the canopy 1. The bottom of this plate is provided with an inwardly extending annular llangc 7, on which is supported a. top plate 8. Two tubes 9 are suspended from the plate S and register with openings therein. I have here shown the tubes and plate S as integral, but it is obvious that the tubes may be secured to the plate in any suitable manner. The lower ends of the tubes 9 communicate with a drum 10, which is closed at the top at 11. 'A cylindrical sleeve 12 which is enlarged at its bottoni to forni an economizer 1? for the arc surrounds the upper electrode and is located within and substantially coextensive with Specification of Letters Patent.

Patented June 8, 1915.

Serial No. 727,730.

the drum 10. This cylindrical sleeve is secured to the top plate 11 oi the drum by suitable lugs and screws 14. An annular partition l5 divides the space between the cylindrical portion of the drum 10 and the sleeve 1Q into two annular passages. Trans verse partitions 1G are also provided for the tubes 9. which are secured to ears 15 with which the partition 15 is provided, the partitlons of the tubes thus being substantially 1n alinement with the annular partition 15. These partitions terminate at a point not far from the upper ends of the tubes, preferably a little short of the upper ends, whereby the two passages formed by the y partition in a given tube are in free coinmunication with each other at the upper ends'of the tubes as well as within the chamber A formed by the canopy 1 and the plate 5 and the top plate 8 through which the tubes 9 pass. The chamber A is preferably divided into two parts by a vertical partition B. An annular plate 161 having its lower end inclined inwardly to fit snugly about the partition 15 is supported by an inwardly turned flange at the top which en gages an outwardly turned flange on the bottoms of the partitions 1G. This plate 16 is formed to deflect the downwardly fiowing current of gases in the outer sections of the tubes outwardly against the cool walls of the tubes 9, thereby promoting a rapid circulation of the gases in the tubes and the inclosing globe, which tends to prevent deposit of the fumes on the globe. It will also he observed that an air spa-ce is formed between the partition 15 and the plate 16,

which tends to prevent radiation from the partition and thereby remote the rapid circulation of gases by increasing the temperature difference between the gases in the outer and inner sections ot the drum and tub s. A light-transmitting globe 17 is seated at the top against a plate 1S supported and insulated from the drum 10. The opening at the bottoni of the globe is closed by a plate 19 having an upturned inwardly fiaring sleeve snugly surrounding the lower electrode. The plate 19 is in turn supported from an annular ring 9.0 carried by arms 21, the outer ends of which are provided with sleeves Q1 by which the globe seat is secured to two sleeves 22 passing through and secured to the drum 10.

The lower and upper electrodes are represented by the reference numerals 23 and 24, respectively. The lower electrode is received in a suitable electrode holder '125, which is carried by two arms 26 and 2T, the former ol" which is secured to a rod LS extendingr upwardly through one of the sleeves The outer end of .the arm 27 is free but passes through a slot 29 in the sleeve 22, as does the sleeve 2G, by which the arms are guided in the usual manner. The upper electrode is received within a carbon-holder 30 secured to a weight 251, which is guided in its movement by two stationary rods VIlne end of a chain 33, which passes over a pulley 34, is connected to the weight Eil, while the other end is connected to the rod 2S. he electrodes are thus connected together in such a manner as to focus the arc, as is well understood. The pulley 34 is journaled at 35 in a bracket 36.

The operating mechanism for tlie lamp comprises :F..niagnet 3T, whose armature 38 is connected by means of'ian arm 39 to the outer end of a lever 40,' the inner end of which is pivoted at 41. A clutch 4'2 is supported from the lever 40 and embraces the chain 323. The details of this clutch mechanisni are described in application, Serial No. 638,798 which was filed by John T. Beeclilyn, July 17, 1911, and I have not deemed it necessary to show the 'detailed structure of the clutch in this application. The clutch, however, grips the chain when the lever 40 is lifted, and thus separates the electrodes, and when the bottoni of the clutch engages the tripping platform 43, the clutch is disengaged lroni the chain. The leadingin wires are represented by the reference numerals 44 and 45. The lead 44 is connected to the coil 37, the other terminal of which is connected by a conductor 4G to the upper electrode 24. The lower electrode is electrically connected to the frame oi the lamp, which is in turn connected to the leading-in wire 45.

The operation of the lamp is very simple and is as follows: When current is turned on, the lamp magnet 3i' is energized, thereby attracting the armature 3S and lifting the lever 40. The clutch member 42 is lifted and grips the chain 33 to lift the upper electrode and permit the lower electrode to de scend. The electrodes are thus separated to `establish the arc. which burns until suoli time as the clutch descends into engagement with the tripping platform 43, when the chain is released and the electrodes permitted to approach each other. The gases evolved from the arc ascend within the inner annular opening formed between the partition l5 and the econoniizer 13, and from this annular opening ascend through the inner portions of the tubes 9 to the chambei' A at the top of the lamp, from whence they descend in the outer portions of the tubes 9 on the outside of the partition 16 and into the annular opening formed between the periphery of the drum 10 and the partition 15, where they again pass into the globe adjacent the wall of the globe. A recurrent circulation is thus produced within the lamp and the solidiiiable products of combustion are deposited within the druin. and the partition to the same and within the tubes and the chamber at the top of the tubes.

It will be seen that my invention provides a simple and eiiicient inclosure within which the fumes from the arc are deposited where they do not obscure the light, and troni which they may readily be remove l.

lVliat I claim as new and desire to secure by Letters Patent of the United States is 1. In an arc lamp, an arc inclosure Acomprising a transparent or translucent globe open at the top within which the are` is formed, a drum closed at the top surinounting and communicating with the globe, and one or more tubes closed at the top surmounting and communicating with the drum, the drum having an annular partition and the tubes having vertical partitions substantially in alinement with the upper edge of the annular partition, the tube partitions terminating short of the upper ends of the tubes, whereby circulatory passages are formed from and to the globe.

2. In an are lamp, a substantially air-tight arc inclosure comprisinga light transmitting globe open at the top within which the arc is formed, a drum closed at the top surinounting the globe and communicating therewith, one or more tubes closed at the' top surmounting the drum and commiiiiicating therewith, the drum being provided with an'annular partition extending throughout its length and the tube or tubes being providedy with partitions which are substantially continuous with the partition of the drum and terminating ata point short of the ends of the tubes, whereby circulatory passages are formed to and from the globe.

3. In an arc lamp, a substantially airtight inclosure comprising a light transmit- 4ting globe within which the are is formed,

a drum closed at the top surmount'ing and communicating with the globe, a circular partition for the drum extending substantially from the top of the globe to/tlie top of the drum, one or more tubes clos/ed at the top surniounting and communicating with the drum, and partitions for said tubes subl stantially in alinement with the partition of the drum, and terminating short of the tops of the tubes, whereby circulatory passages are formed from and to the globe which open at a point substantially in the plane of the top of the globe.

4. In an are lamp, a globe Within which the arc is formed, a drum closed at the top surmounting and communicating with the globe, a sleeve surrounding the upper electrode, a vertical annular partition for the drum, one or more tubes closed at the top ascending from and communicating with the drum, partitions for the` tubes continuous with the partition for the drum and terminating short of the ends of the tubes, and depositing chambers formed at the tops of the tubes and communicating with said tubes, whereby circulatory passages comprising two annular openings formed in the drum and having their orifices substantially in a plane with the top of the globe are formed to and from the globe.

5. In an arc lamp, a pair of electrodes, a substantially air-tight arc inclosure comprising a transparent or translucent globe, a drum surmounting and communicating with said globe, a partition for said drum and an envelop located above the drum having passages communicating with the respective passages formed by the drum and its partition, and means for deflecting the gases descending between said partition and said drum outwardly against the walls of the drum.

6. In an arc lamp, a pair of electrodes, a substantially air-tight arc inclosure comprising a transparent or translucent globe, a drum surmounting and communicating with said globe, a partition for said drum and an envelop locatedabove the drum and having passages communicating with the respective passages formed by the drum and its partition, and an annular plate surrounding the partition formed so as to deflect the descending gases outwardly and to leave an air space between said plate and said partition.

In Witness whereof, I have hereunto set my hand this 23rd day of October 1912.

EMILE J. GUAY. 

